In addition, the heat used during cooking may destroy some of the folate and decrease the amount provided in your diet. Folic acid is added to grain products like flour, bread, cereal, pasta, rice, and cornmeal.

So we recommend you to supplement better folate:
Magnafolate® L Methylfolate—maximizes the supplementation delivering a "finished" folate the body can immediately use without any kind of metabolization.
It can better supplement the folate that the body lacks.
Jinkang Pharma ,the Manufacturer & Supplier of L Methylfolate.